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Amphistegina

Amphisteginidae

Taxonomy
Amphistegina was named by d'Orbigny (1826) [Sepkoski's age data: T Eo-m R]. It is extant. It was considered unknown by d'Orbigny (1826).

It was assigned to Foraminiferida by Sepkoski (2002); and to Amphisteginidae by d'Orbigny (1826), Cushman (1927), Loeblich and Tappan (1984) and Margerel (2012).

Species
A. euaensis, A. gibbosa, A. lessonii, A. rotundata
Species lacking formal opinion data
A. bowdenensis, A. trilobata

Synonymy list
YearName and author
1826Amphistegina d'Orbigny p. 304
1927Amphistegina Cushman p. 80
1984Amphistegina Loeblich and Tappan
2002Amphistegina Sepkoski
2012Amphistegina Margerel

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RankNameAuthor
kingdomChromistaCavalier-Smith 1981
subkingdomRhizaria()
phylumForaminifera(Eichwald 1830)
suborderRotaliinaDelage and Herouard 1896
RankNameAuthor
superfamilyAsterigerinacead'Orbigny 1839
familyAmphisteginidaeCushman 1927
genusAmphistegina

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. Amphistegina d'Orbigny 1826
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†Amphistegina euaensis Todd 1970
Amphistegina gibbosa d'Orbigny 1839
Amphistegina lessonii d'Orbigny 1826
Diagnosis
ReferenceDiagnosis
A. D. d'Orbigny 1826Divisions transverse to the chambers, appearing only on one side of the shell, sometimes divisions parallel to the chambers, also appearing on each side; single opening, semi-lunar on the less curved side, and coulters the return of the coil which is embracing.
Measurements
No measurements are available
Composition: low Mg calcitesubo
Environment: outer shelf, marinesubo
Locomotion: stationarysubo
Life habit: semi-infaunalo
Diet: carnivoreg
Comments: microcarnivoreg
Created: 2009-05-20 03:30:41
Modified: 2009-05-20 05:30:41
Source: g = genus, subo = suborder, o = order
Reference: Kiessling 2004

Age range

Maximum range based only on fossils: base of the Early/Lower Eocene to the top of the Holocene or 55.80000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 47.8 Ma

Collections (159 total)


Time interval Ma Country or state Original ID and collection number
Ypresian56.0 - 47.8USA (Washington) A. sp. (146905)
Ypresian56.0 - 47.8Iran A. sp. (226728)
Ypresian - Lutetian56.0 - 41.3Maldives (Kaashidhoo) A. sp. (214818)
Eocene56.0 - 33.9Mexico (Baja California Sur) A. pregrimsdalei (68714)
Early/Lower Eocene - Middle Eocene55.8 - 37.71Trinidad and Tobago A. gibbosa (140160)
Lutetian47.8 - 41.3Mexico (Chiapas) A. parvula, A. sp. (45920)
Lutetian - Priabonian47.8 - 33.9Romania (Transylvania) A. sp. (215967 215969)
Priabonian38.0 - 33.9Tonga A. euaensis (43006)
Priabonian38.0 - 33.9Spain A. sp. (152586)
Priabonian38.0 - 33.9Costa Rica A. parvula (179808)
Early/Lower Oligocene33.9 - 28.4USA (Florida) A. sp. (41197)
Rupelian33.9 - 28.1Italy A. sp. (214135)
Rupelian33.9 - 28.1Italy (Vicenza) A. sp. (151438 151439)
Rupelian33.9 - 28.1Spain A. sp. (147590 147591 147593 147595)
Oligocene33.9 - 23.03Indonesia A. sp. (61740)
Oligocene33.9 - 23.03Puerto Rico A. sp. (92230)
Rupelian - Chattian33.9 - 23.03Italy A. sp. (155216 214251)
Late/Upper Oligocene28.4 - 23.03Antigua and Barbuda A. chipolensis (94182 94183 94185)
Chattian28.1 - 23.03China A. lobifera, A. lessonii (223349)
Chattian28.1 - 23.03Italy A. sp. (36244 36245 36246 36252 36253 36255)
Chattian28.1 - 23.03New Zealand (North Island) A. sp. (205949)
Chattian28.1 - 23.03Malta (Northern Region) A. sp. (221493 222469 222471 222475 222476 222479 222480 222485)
Aquitanian23.03 - 20.44Malaysia A. sp. (204642)
Early/Lower Miocene23.03 - 15.97Indonesia A. sp. (70939)
Aquitanian - Tortonian23.03 - 7.246Italy (Caserta) A. sp. (222633)
Aquitanian - Tortonian23.03 - 7.246Italy (Frosinone) A. sp. (222635)
Miocene23.03 - 5.333Iran A. sp. (151421 151424) A. spp. (151428)
Otaian - Altonian21.7 - 15.9New Zealand A. aucklandica (146596) A. sp. (77489)
Burdigalian20.44 - 15.97Iran A. sp., A. lessonii (176776)
Burdigalian20.44 - 15.97France A. sp. (151414 151415)
Burdigalian20.44 - 15.97France (Corsica) A. sp. (222488 222489 222490 222491 222492 222493 222494)
Burdigalian20.44 - 15.97Indonesia A. sp. (164740)
Burdigalian20.44 - 15.97Italy (Sassari) A. sp. (222412 222413 222414 222415 222417 222418 222419)
Burdigalian20.44 - 15.97Egypt A. trilobata (147629 147696)
Burdigalian20.44 - 15.97Cyprus A. sp. (223596 223597 223598)
Burdigalian - Langhian20.44 - 13.82Malaysia A. sp. (165770)
Langhian15.97 - 13.82Turkey A. sp. (166093 166094 166192 166200 166205 166206 166207)
Langhian15.97 - 13.82Austria A. sp. (146184 146225 146228 146229 146230 146231 146522)
Langhian15.97 - 13.82Israel A. sp. (69908)
Middle Miocene15.97 - 11.608Cuba A. gibbosa (232852)
Badenian13.65 - 12.7Romania A. sp. (198869 198870 198872)
Badenian13.65 - 12.7Poland A. mamilla (138306 147574) A. radiata (37370 37371)
Tortonian11.62 - 7.246Indonesia A. sp. (164753)
Tortonian11.62 - 7.246Saudi Arabia A. haueri (34414)
Tortonian - Messinian11.62 - 5.333Morocco A. lessonii (70929)
Late/Upper Miocene11.608 - 5.333USA (Florida) A. sp. (94805)
Late/Upper Miocene11.608 - 5.333Cape Verde A. tuberculata, A. canaensis, A. bowdenensis (92734)
Late/Upper Miocene11.608 - 5.333South Africa (KwaZulu-Natal) A. sp. (41473)
Messinian7.246 - 5.333Italy A. lessoni (70417) A. sp. (69898)
Messinian7.246 - 5.333Tanzania A. sp. (202214)
Messinian7.246 - 5.333Spain A. sp. (69812)
Messinian7.246 - 5.333Indonesia A. sp. (168782)
Messinian7.246 - 5.333Algeria A. sp. (70860)
Early/Lower Pliocene5.333 - 3.6Antigua and Barbuda A. rotundata (198642)
Zanclean5.333 - 3.6Italy (Provinz Siena) A. sp. (138092 138093 138094)
Early/Lower Pliocene - Late/Upper Pliocene5.333 - 2.588Costa Rica A. sp. (198246)
Pliocene5.333 - 2.588Egypt A. trilobata (147632 147634 147635 147636 147638 147642 147697)
Pliocene5.333 - 2.588USA (South Carolina) A. gibbosa (60932)
Pliocene - Pleistocene5.333 - 0.0117Comoros A. lessonii (192236)
Piacenzian3.6 - 2.588Panama (Bocas del Toro) A. gibbosa (91902)
Gelasian2.588 - 1.806India (Andaman Islands) A. sp. (222375)
Early/Lower Pleistocene2.588 - 0.781Marshall Islands A. sp. (43338)
Early/Lower Pleistocene2.588 - 0.781USA (Hawaii) A. sp. (105531)
Early/Lower Pleistocene2.588 - 0.781USA (Florida) A. lessonii (41205)
Early/Lower Pleistocene2.588 - 0.781Panama A. gibbosa (91912)
Early/Lower Pleistocene2.588 - 0.781Taiwan A. sp. (71151)
Pleistocene2.588 - 0.0117Saudi Arabia A. sp. (198550)
Pleistocene2.588 - 0.0117Egypt A. trilobata (147647 147648 147649 147650)
Middle Pleistocene0.774 - 0.129USA (Hawaii) A. sp. (105528)
Middle Pleistocene0.774 - 0.129Jordan A. sp. (82751 82754)
Middle Pleistocene - Late/Upper Pleistocene0.774 - 0.0117New Caledonia A. radiata, A. lessonii (109502)
Late/Upper Pleistocene0.129 - 0.0117Mauritius A. radiata, A. lessonii (81015) A. sp. (81017)
Late/Upper Pleistocene (glacial)0.129 - 0.0117Mayotte A. sp. (89249)
Late/Upper Pleistocene0.129 - 0.0117Saudi Arabia A. papillosa (80963) A. sp. (192719)
Late/Upper Pleistocene0.129 - 0.0117Marshall Islands A. sp. (43336)
Late/Upper Pleistocene (interglacial)0.129 - 0.0117Egypt A. lessonii (87876)
Late/Upper Pleistocene0.129 - 0.0117USA (Hawaii) A. lessonii (89415) A. sp. (105526)
Holocene0.0117 - 0.0Australia (Queensland) A. sp. (97319)
Holocene0.0117 - 0.0Palau A. sp. (97446)
Holocene0.0117 - 0.0Mayotte A. madagascarensis (209863) A. sp. (209858 209859 209860)
Holocene0.0117 - 0.0Japan A. sp. (97293)
Holocene0.0117 - 0.0USA (Hawaii) A. sp. (97453)
Holocene0.0117 - 0.0French Polynesia A. sp. (97471)
Holocene0.0117 - 0.0Seychelles A. lessoni (96926)